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(No Model.) 3 Sheets-Sheet 1.

O. T. TOULMIN. WATERHEATER 0R BOILER.

N0. 521,995. Patented June 26, 18 94.

WITNESSES:

(No Model.) 3 Sheets-Sheet 2.

0. T. TOULMI N.

WATER HEATER OR BOILER.

No. 521,995. Patented June 26, 1894.

WITNESSES:

(No Model.)

WITNESSES i a Sheets-Sheet 3. 0. T. TOULMIN.

WATER HEATER 0R. BOILERK Patented June .26, 1894.

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IN VEIV T 0R g? I ATT EY CHARLES TUOK TOULMIN, OF NEW YORK, N. Y.

WATER HEATER OR BOILER.

SPECIFICATION forming part of Letters Patent No. 521,995, dated June 26, 1894.

Application filed March 21, 18,94-

To all whom it may concern.-

Be it-known that I, CHARLES TUoK 'IoUL- MIN, of 165 Broadway, in the city, county, and

. State of New York, United States of America,

structed of separable and interchangeable sections, so that by increasing or decreasing their number, the capacity of the heater or boller can be readily altered at will.

Among the objects of my improvements are to increase the water-heating surface and to arrange for varying the same at will, to improve the circulation, to provide for convenently cleaning the dues, to facilitate the heating, to enable any section to be readily removed and replaced without disconnecting the other parts, and to otherwise variously slmplify and improve the construction.

To this end, my invention comprises various novel features of construction; and in order that the invention may be clearly ascertained, I shall first describe in detail the mode in which I carry the invention into practice and then point out its several features in the claims.

Reference is to be had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation of a sectional water heater or boiler embodying my invention. Fig. 2 represents the same in cross-section on the line 2-2 Figs. 1 and 3. Fig. 3 represents the same in central longitudinal section. Fig. 4 is a perspective view of one of the sections of the same. Figs. 5 and 6 are vertical sectional views of two adjoining sec.- tions of the same. Fig. 7 is an enlarged detail sectional view illustrating the improved coupling connecting each section with the collecting pipe. Fig. 8 is a broken perspective view of a tubular water-grid used in the $erial No. 504,499. (No model.)

combustion chamber for facilitating the heating. Fig. 9 is a front elevation of the heater or boiler. Fig. 10 is a plan view of 'one of the grate-sections.

Like parts are designated by the same lot ters of reference in all the figures.

I construct the body of the heater or boiler of-a variable number of vertical transverse hollow sections A, by preference of castiron,

alternating regularly with and closely abutting similar vertical-transverse sections. 13, differing only slightly therefrom as hereinafter described, a vertical water-back section 0, and a front plate D, which I in some instances may castintegrally with the front section A.

The various sections A, B, G and D correspondexteriorly and are rigidly bound together by outside projecting lugs E and bolts F, which may connect all the sections as shown, or be in number, each to connect two adjoining sections if preferred.

Each section A is cast with vertical side water-legs G G, connected and communicating at'their upper ends byatransverse steam and water-head H having a steam dome H, a short distance above their lower ends by a transverse water-waist I, and between the head H and waist I, which are of'the same thickness throughout, by a water-bridge J of about half the thickness of the said head and legs, and separated from the head and waist by the spaces K and L respectively.

Each alternating section Bis formed like the sections A just described, save that its water-bridge J is continued upward into its head H, so as to leave no opening therebetween. The tops J of the water-bridges J of the sections A, I make V-shaped, as shown,

to facilitate the upward and outward circulation of water from said bridges J into the water-legs G G.

The abutting water-legs G G and waterwaists I of all the combined sections A and B, and the back section 0, form the imp'erfo rate water-walls, water-roof and water-back, respectively, of the combustion chamber K, which, as I omit, or form an opening L'through the water-waist of the last section A, communicates at its back with the vertical space or flue between the water back 0, and the next adjacent water-bridge J.

I provide an adjustable cut-off L for each space or opening L between the water-bridge and water-waist of each of the sections A and B, and normally close all the cut-offs L in the sections A, and open those in the sections B. For the purpose of simultaneously adjusting these two sets of alternate cut-offs L, I connect them on the outside of the boiler or heater with continuous operating rods M and M, as indicated in Fig. 1.

All the sections A and B are in addition provided with inside ledges N below the wa ter waists I, to support the grate O, (which may be sectional as shown,) above the ash pit O, and with the ledges P immediately be low the waist I, on which I rest horizontally a removable tubular water grid Q (shown in Fig. 8) composed of hollow transverse end bars Q connected medially by longitudinal water-tubes Q and on each side by guide rails Q whereby the grid Q will slide easily on the ledges P into and out of the combustion chamber.

The front of the combustion chamber K is closed by a double door R R in the face plate D, the outer door B being large enough and opened only to permit the passage of the removable grid Q, the inner door B being the one employed for replenishing the fire.

The domes H of the water heads H of all the sections A, B and C are severally connected by a peculiar form of coupling S,shown in detail in Fig. 7, to a collecting pipeT running over the top of the heater or boiler, by which the steam or hot water from all the water sections A,-L and O is supplied to the circulating pipe T.

The water-legs G G of all the sections A, B and C are likewise connected at their feet by like couplings S to collecting pipes U, by which the cold or condensation Water ,from the circulating system is returned to the bottom of all the said water sections. The said couplings S each consist of threaded coupling-sleeves S S formed on the collecting pipe as U, and on the water-section as A, respectively, a head S having its coupling ends S and S threaded oppositely to the respective coupling sleeves S and S and couplers S and S each of which has its ends oppositely threaded to engage the opposing sleeves S and S and the ends S and S so that by simply unscrewing the couplers S 8", they will be disconnected simultaneously from the collecting pipe and the water-sections, as A, and thus permit the renewal of any water-section A, without disturbing any of the other sections or their connections. The opposite ends of the removable water grid Q are also connected, as indicated in dotted lines, by detachable couplings Q and Q and pipes Q and Q respectively to the supply pipe T and one of the return pipes W. The removable water grid Q, is thus employed to hasten the initial circulation, as the flames play first thereon and cause the hot water therein to ascend almost immediately through its supply pipe Q", the cold water entering at the same time at the other end through the return pipe Q The flames also play through the grid Q upon. the cellular water roof of the combustion chamber K formed by the Water waists I, from which they also rebound upon the upper side of the grid Q, and they also play upon the cellular water walls of the combustion chamber K, so that the water n said roof and walls is heated and ascends 1n the water legs G G.

The products of combustion ascendin g from the back of the combustion chamber K through the roof opening L as before described, play upon the water back 0, and, the cut-oifs L in the alternate water-sections A being closed, are forced to ascend in the vertical flue formed between the water back and the next adjacent water-bridge J, thence be tween said Water-bridge and the correspond ing water-head II, and down between said bridge and the next bridge J, and then heneath the latter, and so 011 through the vertically zig-zag flue thus formed between the water-bridges, heads and waists, until the escape flue W is reached.

The inner sides of the water-back C, waterlegs G G and water-heads II, and both sides of the water-bridges J J and Water-waistsI of all the sections are thus impinged upon by the heated products of combustion, by which an exceptionally large and effective heating surface is obtained. The heated water and steam ascends from the water legs,

bridges and heads into the domes H, and thence through the collecting supply pipe T into the circulating system, whence the cold water is returned as before described.

By opening all the cut-offs L the products of combustion may be shunted from the vertically zig-zag fine and into the straight base flue thus formed beneath all the bridges J J,

i to give a direct draft for firing, and in a like mannerthis base flue, which is provided with a door V in the front plate D, can be made accessible therethrough for cleaning the fines,

the accumulations in all of which will from the nature of the construction be deposited in said base flue.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, isp 1. A water heater or boiler constructed of a series of cast vertical sections, each formed with side water-legs G G", a transverse steam and water-head H, a transverse water-waist I, and a transverse water-bridge of less thick ness than the water-legs and head, the combined spaces below the water-waists I constituting the combustion chamber, and the vertical spaces between the water-bridges a succession of vertical flues, connected with the back of the combustion chamber, a grate placed in said combustion chamberbelow the water waists I and supply and return pipes connected respectively with the head and water-leg of each section, substantially as herein shown and described.

2. A water heater or boiler constructed of a series of vertical sections, each formed with side water-legs G G, a transverse steam and water-head H, a transverse water-waist I, and atransverse water-bridge J or J of less thickness than the water legs, the combined spaces below the water-waists I, constituting the combustion chamber, and the alternate sections formed with spaces respectively be-- tween the water-bridges J and the waterheads II, and between the Water-bridges J, and the water-waists I, said spaces and the Vertical spaces between said water-bridges to constitute a vertically zig-zag escape flue connected with the back of the combustion chamber, and supply and return pipes connected respectively with the head and leg of each section, substantially as herein described.

3. A water heater or boiler constructed of a series of vertical sections, each formed with side water legs G G, atransverse steam and water-head H,a transverse water-waist I, and a transverse water-bridge J or J of less thickness than said water-legs, the combined spaces below the water-waists I constituting the combustion chamber and the alternate sections formed respectively with spaces between the water-bridges J and the water-waists I, and both above and below the water-bridges J,

. bination with aremovable tubular water-grid Q sliding on the ledges P above the grate and below the water-waists I and couplings detachably connecting said grid at opposite ends with the supply and the return pipes respectively, as set forth.

5. In a sectional water heater or boiler as described,the combination with each watersection and the collecting pipe provided with threaded coupling sleeves S S, of "a bend S having coupling ends threaded oppositely to the respective coupling sleeves S S, and couplers S 8 each having its ends oppositely threaded, substantially as and for the purpose hereinbefore set forth.

New York, N. Y., January 25, 1894.

- CHARLES TUOK TOULMIN.

In presence 0.f

CLARENCE L. BURGER, FRED O. EWING. 

